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BEDMINSTER TOWNSHIP, NJ - NOVEMBER 20: President-elect Donald Trump waves as he arrives at Trump International Golf Club for a day of meetings, November 20, 2016 in Bedminster Township, New Jersey. Trump and his transition team are in the process of filling cabinet and other high level positions for the new administration. (Photo by Drew Angerer/Getty Images)

BEDMINSTER TOWNSHIP, NJ - NOVEMBER 20: President-elect Donald Trump waves as he arrives at Trump International Golf Club for a day of meetings, November 20, 2016 in Bedminster Township, New Jersey. Trump and his transition team are in the process of filling cabinet and other high level positions for the new administration. (Photo by Drew Angerer/Getty Images)

President-elect Donald Trump on Friday shared a letter he received from Russian President Vladimir Putin, who offered Mr. Trump his “warmest Christmas and New Year greetings” and urged the next president “to take real steps to restore the framework of bilateral cooperation.”

“A very nice letter from Vladimir Putin; his thoughts are so correct,” President-elect Trump said in a statement. “I hope both sides are able to live up to these thoughts, and we do not have to travel an alternate path.”

In the translation of the December 15th letter provided by the Trump team, Putin wrote that “serious global and regional challenges, which our countries have had to face in recent years, show that relations between Russia and the US remain an important factor in ensuring stability and security of the modern world.”

Putin continued, “I hope that after you assume the position of the President of the United States of America, we will be able — by acting in a constructive and pragmatic manner — to take real steps to restore the framework of bilateral cooperation in different areas as well as bring our level of collaboration on the international scene to a qualitatively new level.”

Russian President Vladimir Putin spoke by telephone with US President-elect Donald Trump Monday, according to statements from the Trump transition team and the Kremlin.

The release of the letter — which was confirmed as authentic by Moscow — comes days after Russia loudly voiced complaints about its relationship with the US under the Obama administration, and after ambiguous remarks from President-elect Trump about the need to “strengthen and expand” the US nuclear capability to counter nuclear adversaries.

At his annual year-end news conference on Thursday, Putin said that the US and Russia “need to discuss ways to normalize our relations. During his election campaign, President-elect Trump said it would be proper to normalize and it can’t be worse, and I agree with him.”

A Kremlin spokesperson criticized the poor relationship with the Obama administration in an interview Wednesday. “Nearly all levels of our dialogue (with the US) has been frozen,” Kremlin spokesman Dmitry Peskov told Russian state-run news agency RIA Novosti. US State Department spokesperson John Kirby pushed back on Peskov’s assessment, saying Thursday that “diplomatic engagement with Russia continues across a wide range of issues.”

Still, the sharp rhetoric from each side stems from serious disagreements over crises in Syria and Ukraine, and allegations by the US against Russia of covertly interfering in the 2016 election by hacking — to the advantage of President-elect Trump, according to the intelligence community.

Adding to the tension is President-elect Trump’s cavalier dismissal of nuclear proliferation concerns — he reportedly told MSNBC on Friday, “let it be an arms race.” And incoming new White House press secretary Sean Spicer added to Mr. Trump’s comments by saying on CNN, “If another country or countries want to threaten our safety, our sovereignty, [Trump’s] going to do what it takes.”